1, Vancouver Island, the largest North American island in the Pacific, is also the point departure for nautical explosion of British Columbia's rugged fjords.
point departure很明显是错的，我的问题是可以说island in the pacific吗？给我的感觉好像是岛在海底一样。
2. Before the mumps vaccine was introduced, mumps was a major cause of deafness in children, occuring in approximately 1/20,000 report of cases.
画线部分错在哪里呢？
3. First published in 1962, Rachel Carson's book Silent Spring--- a prophetic warning of the dangers of environmental pollution.
A） proves to be D） has proven to be
为什么选D不选A？
4. The more industrialized states of the United States began to enact labor laws toward the end of the 19th century, but the bulk of the present labor legislation of the United States was not adopted until after the Depression for the 1930s.
整个句子有没有问题？the more 的用法好像不是这样的，此外说toward the end of the 19th century 可以吗？什么意思？
5.A scientist named Chardonnetif, by watching silkworms, realized that liquid leaves must be forced through many tiny holes---form fine, silk-like threads.
小问题一个，这里的liquid leaves算不算从句的主语呢？
6. It is hard to imagine how Manhattan, bought from a Native American tribe for so little, ---vibrant financial community in America.
A)could become the most
B)becomes the most
AB的语气好像不同，但是单从语法的角度分析，B为什么不能选？
7. In United States schools, there is no law that prevents children from 5 years old and above being home schooled.
错误在school没有加S，但是后面的主句我也觉得有问题，不像是prevent from doing的句型
8. Animals of Northwestern Canada, like polar bears, seals and caribou, are frequently to be find in Inuit sculptures.
我觉得以上两个画线部分都有错，但是答案只说be find是错。
9. There is a fear that the current increase in world temperatures mean that many more plants and animals are driven to extinct.
many more---->much more 是可以的，但是to extinct可以用to 这个介词加形容词的extinct吗？
10. ---is especially adapted to small-scale production of milk for the family table, as one or two goats supply sufficient milk for a family throughout the year and can be maintained economically in quarters where it would not be practical to keep a cow.
A)Goat C)The goat
我选了错误的C，因为我以为Goat作为可数名词要么就有冠词，要么就加S。
11. Over all the industrial activity of late 1800's, there presided a colorful and energetic group of entrepreneurs, who appeared to symbolize at the public the new class of leadership in the United States.
这里又有个小问题，画线部分改成什么形式好呢？是to the public吗？
12. The techniques used in breeding hybrid corn have successfully applied to grain sorghum and more other crops.
错误很明显，但是为什么hybrid corn不用复数？
13. Before the polio vaccine was known, more than 20,000 causes of paralytic disease occured in the United States every years.
同样错的很明显，这次是为什么paralytic disease 不用复数?
Thanks!
仅供参考
1, 感觉很对,不知道怎么会感觉在海底,好像游泳~~开革玩笑,语法题么,不管,看到Vancouver Island, the largest North American island in the Pacific, is ..就把逗号里的删掉再说~~呵呵
2.可能是case把,report of case之类
3 50% chance ,i goes D.Just a guess
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